<template>
  <div ref="rightPanel" :class="{show:show}" class="rightPanel-container">
    <div class="rightPanel-background"/>
    <div class="rightPanel">
      <div class="handle-button" :style="{'top':buttonTop+'px','background-color':theme}" @click="show=!show">
        <i :class="show?'el-icon-close':'el-icon-setting'"/>
      </div>
      <div class="rightPanel-items">
        <slot/>
      </div>
    </div>
  </div>
</template>

<script>
    import {addClass, removeClass} from '@utils'

    export default {
        name: "rightPanel-index",
        props: {
            clickNotClose: {
                default: false,
                type: Boolean
            },
            buttonTop: {
                default: 250,
                type: Number
            }
        },
        data() {
            return {
                show: false
            }
        },
        computed: {
            theme() {
                return this.$store.state.settings.theme
            }
        },
        watch: {
            show(value) {
                if (value && !this.clickNotClose) {
                    this.addEventClick()
                }
                if (value) {
                    addClass(document.body, 'showRightPanel')
                } else {
                    removeClass(document.body, 'showRightPanel')
                }
            }
        },
        mounted() {
            this.insertToBody()
        },
        beforeDestroy() {
            const elx = this.$refs.rightPanel
            elx.remove()
        },
        methods: {
            addEventClick() {
                window.addEventListener('click', this.closeSidebar)
            },
            closeSidebar(evt) {
                const parent = evt.target.closest('.rightPanel')
                if (!parent) {
                    this.show = false
                    window.removeEventListener('click', this.closeSidebar)
                }
            },
            insertToBody() {
                const elx = this.$refs.rightPanel
                const body = document.querySelector('body')
                body.insertBefore(elx, body.firstChild)
            }
        }
    }
</script>

<style>
  .showRightPanel {
    overflow: hidden;
    position: relative;
    width: calc(100% - 15px);
  }
</style>

<style lang="scss" scoped>
  .rightPanel-background {
    position: fixed;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity .3s cubic-bezier(.7, .3, .1, 1);
    background: rgba(0, 0, 0, .2);
    z-index: -1;
  }

  .rightPanel {
    width: 100%;
    max-width: 260px;
    height: 100vh;
    position: fixed;
    top: 0;
    right: 0;
    box-shadow: 0px 0px 15px 0px rgba(0, 0, 0, .05);
    transition: all .25s cubic-bezier(.7, .3, .1, 1);
    transform: translate(100%);
    background: #fff;
    z-index: 40000;
  }

  .show {
    transition: all .3s cubic-bezier(.7, .3, .1, 1);

    .rightPanel-background {
      z-index: 20000;
      opacity: 1;
      width: 100%;
      height: 100%;
    }

    .rightPanel {
      transform: translate(0);
    }
  }

  .handle-button {
    width: 48px;
    height: 48px;
    position: absolute;
    left: -48px;
    text-align: center;
    font-size: 24px;
    border-radius: 6px 0 0 6px !important;
    z-index: 0;
    pointer-events: auto;
    cursor: pointer;
    color: #fff;
    line-height: 48px;

    i {
      font-size: 24px;
      line-height: 48px;
    }
  }
</style>